JP2005272089A - Image recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fix a recording plate by pressing the recording plate against a plate feeding belt at the time of punching, thereby eliminating slip of the recording plate, and accurately punching both ends of the recording plate. An image recording apparatus is provided.
SOLUTION: One compressed air ejection mechanism 47A is supplied to one and the other compressed air ejection mechanisms 47A and 47B from a compressed air generation facility via a supply tube 55, a flow divider 56 and branch pipes 57 and 58. Compressed air is blown onto the recording plate A (C) from above the central injection nozzle 51 and one side and other side injection nozzles 52, 53, and the central injection nozzle of the other compressed air injection mechanism 47B. The recording plate A (C) is fixed by blowing compressed air from above 51 and the jet nozzles 52 and 53 on one side and the other side from above. [Selection] Figure 10

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image recording apparatus for recording an image on a recording plate, and in particular, in a plate feeding unit that picks up recording plates one by one from a stack of recording plates and supplies them to a recording unit. The present invention relates to an image recording apparatus in which a recording plate is fixed in processing.

  In lithographic printing, a recording plate is used as a printing plate on which the surface is coated with a sensitizer and a required image is recorded by exposure by laser light irradiation. A large number of such recording plates are stacked to record an image. When the recording process is carried into the apparatus and the recording process using the laser beam is performed, the recording plates are picked up one by one from the recording plate and supplied to the recording unit. When the recording process in the recording unit is completed, the recorded recording plate is It is taken out from the recording unit and discharged outside.

  The drum in the recording unit has a clamp that sandwiches the end of the recording plate and a negative pressure groove that is held at a negative pressure by a vacuum pump (negative pressure generation source) in order to tightly fix the recording plate to the outer peripheral mounting surface. Are provided.

  The negative pressure groove is provided with a pair of plate mounting regions corresponding to the 1W plate recording plate so that two 1W plate recording plates can be mounted side by side in the width direction (drum axis direction). In the attachment region, the negative pressure groove can be operated independently, and it is also possible to attach the 1 W plate recording plate to only one of the plate attachment regions. On the other hand, in the 2W recording plate, the recording plate is attached so as to cover both of the pair of plate attachment regions.

  The end of the recording plate is clamped and the recording plate is closely fixed to the mounting surface on the outer periphery of the drum. However, air enters between the recording plate and the mounting surface, and this recording plate floats. When the vacuum pump is stopped due to a power failure or the like and the negative pressure of the recording plate cannot be maintained, the recording plate is displaced and comes off the clamp.

  For this purpose, holes are made by punching at both ends (the tail side and the tail edge side) of the recording plate, and when both ends of the recording plate are clamped, pins are inserted into the holes to insert the recording plate. It is fixed.

  In the plate feeding section for supplying the recording plate to the recording section, punch devices are arranged on the carry-in side and the carry-out side of the transport device, respectively, and the recording plate placed on the plate feed belt of the transport device is punched. And punched at both ends of the recording plate by punching.

In addition, the transport device has two transport units so that two 1W plate recording plates can be transported side by side in a direction orthogonal to the plate feeding direction. It is rotationally driven by a separate drive motor (see Patent Document 1).
JP 2003-2524460 A

  However, when the recording plate is placed on the plate feeding belt and moved to the punching device, if the recording plate slips with respect to the plate feeding belt, the punching process cannot be accurately performed on both ends of the recording plate.

  Further, since each drive pulley of the transport unit is driven to rotate by a separate drive motor, when the 2W plate recording plate is transported on the plate feeding belts of the two transport units and moved to the punch device, The speed of the plate feeding belt differs depending on the load of the drive motor of each of the two conveying sections, and the recording plate cannot be accurately mounted on the punching device, and the punching process is accurately performed on both ends of the recording plate. I can't.

  For this reason, it is desired that the recording plate be fixed so that the punch position does not shift when punching is performed by a punching device.

  The present invention has been devised based on such knowledge of the inventor. The purpose of the present invention is to fix the recording plate by pressing the recording plate against the plate feeding belt during the punching process. It is an object of the present invention to provide an image recording apparatus that can eliminate the slip of the plate and can accurately punch the both ends of the recording plate.

  In order to achieve the above object, an image recording apparatus according to the present invention is an image recording apparatus including a recording unit that records an image on a recording plate, and a plate feeding unit that supplies the recording plate to the recording unit. A plate feeding unit having a plate feeding belt that conveys the recording plate to the recording unit, a front punch device that is located on the carry-in side of the conveying unit and performs punching on one end of the recording plate; A rear punch device that is located on the carry-out side of the transport unit and performs punching on the other end of the recording plate, and presses the recording plate against the plate feeding belt during punching to the plate feeding unit. A pressing means for fixing is provided.

  With this configuration, at the time of punching, the recording plate can be pressed against the plate feeding belt by pressing means to fix the recording plate, and slippage of the recording plate can be eliminated, and punching can be accurately performed at both ends of the recording plate. Can be applied.

  In the image recording apparatus according to the present invention, the pressing unit is an air spraying device that fixes the recording plate by spraying compressed air.

  With this configuration, during the punching process, compressed air is blown onto the recording plate by the air blowing device, the recording plate is pressed against the plate feeding belt, the recording plate is fixed, and the recording plate can be prevented from slipping. Punching can be accurately performed on both ends of the plate.

  In the image recording apparatus according to the present invention, in the above-described image recording apparatus according to the present invention, the air blowing device includes an ejection nozzle that blows compressed air onto the recording plate from directly above the conveying unit.

  With such a configuration, during the punching process, the recording plate is pressed against the plate feeding belt by blowing compressed air from the ejection nozzle to the recording plate, so that the recording plate can be prevented from slipping. Punching can be accurately performed on both ends of the plate.

  Further, the image recording apparatus according to the present invention is the above-described image recording apparatus according to the present invention, in which the plate feeding unit has two transporting units so that the recording plate can be transported side by side in a direction orthogonal to the plate feeding direction. The injection nozzles are arranged immediately above the two transport units, and the spray directions of the spray nozzles are directed so that the respective jet flows do not interfere with the adjacent transport unit.

  With this configuration, the compressed air ejected from the ejection nozzle in one transport unit is not blown toward the other transport unit, and similarly, the compressed air ejected from the ejection nozzle in the other transport unit is transported in one transport unit. The recording plate transported by one (other) transport section is not affected by the jet flow from the jet nozzle on the other (one) transport section side and is compressed without being sprayed to the section side. It is possible to reliably press the recording plate against the plate feeding belt by blowing air. For this reason, the recording plate can be fixed, slippage of the recording plate can be eliminated, and punching can be accurately performed on both ends of the recording plate.

  Further, when the recording plate is not present in one conveyance section, the compressed air is blown onto the plate feeding belt, and the surface of the plate feeding belt is cleaned. When dust adheres to the surface of the plate feeding belt, the frictional force is reduced to cause a slip or the like, which can be prevented.

  In the image recording apparatus according to the present invention, in the above-described image recording apparatus according to the present invention, three ejection nozzles are arranged in each of the two transport units in a direction orthogonal to the plate feeding direction. The injection nozzles of the first and second nozzles are connected to a common compressed air supply source, and the central injection nozzle has its injection direction perpendicular to the conveying surface of the plate feeding belt. Is directed toward the injection direction of the central injection nozzle.

  With this configuration, the compressed air injected from the one side nozzle and the other side injection nozzle in one transport unit is sprayed toward the injection direction of the central spray nozzle, and thus is sprayed to the other transport unit side. Similarly, the compressed air jetted from the jet nozzles on one side and the other side in the other transport unit is blown toward the jet direction of the central jet nozzle and is directed to the one transport unit side. Since the recording plate is not sprayed, the recording plate transported by one (the other) transport unit is not affected by the jet flow from the spray nozzle on the other (one) transport unit side, and the compressed air is sprayed. The recording plate can be reliably pressed against the plate feeding belt. For this reason, the recording plate can be fixed, slippage of the recording plate can be eliminated, and punching can be accurately performed on both ends of the recording plate. Further, when the recording plate is not present in one conveyance section, the compressed air is blown onto the plate feeding belt, and the surface of the plate feeding belt is cleaned. When dust adheres to the surface of the plate feeding belt, the frictional force is reduced to cause a slip or the like, which can be prevented.

  The image recording apparatus according to the present invention is the image recording apparatus according to the present invention described above, wherein the drive sources of the two conveying units are performed by one drive motor.

  With this configuration, when the 2W plate recording plate is placed on the plate feeding belts of the two conveyance units and conveyed to the punching device, the plate feeding belts differ depending on the load of the drive motors of the two conveyance units. The speed is different, and the recording plate cannot be accurately set in the punching device, and the punching process cannot be accurately performed on both ends of the recording plate. The recording plate can be accurately set in the punching device, and the punching process can be accurately performed on both ends of the recording plate.

  According to the image recording apparatus of the present invention, during the punching process, compressed air is blown to the recording plate by the pressing means, that is, the air blowing apparatus, and the recording plate is pressed against the plate feeding belt to fix the recording plate, This slip of the recording plate can be eliminated, and the punching process can be accurately performed on both ends of the recording plate.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  1 is a front view of an image recording apparatus according to the present invention, FIG. 2 is a side view of the image recording apparatus, and FIG. 3 is a plan view of the image recording apparatus.

  As shown in FIGS. 1 to 3, an image recording apparatus according to the present invention is used for making a printing plate in newspaper printing, and includes a recording unit (recording unit) 1 for recording an image on a recording plate. A plate feeding unit (plate feeding unit) 2 for supplying a recording plate to the recording unit 1, a plate discharging unit (plate discharging unit) 3 for taking a recorded recording plate from the recording unit 1 and sending it to the outside, a recording plate and a mating plate The first and second plate storage units 6 and 7 in which the deposits 4 and 5 formed by alternately stacking paper are arranged, and the required recording plates are picked up one by one from the plate storage units 6 and 7 An adsorption unit (plate transport means) 8 for transporting to the unit 2 and an interleaf paper recovery unit (intermediate paper recovery section) 9 for recovering the interleaving paper separated and removed from the deposits 4 and 5 of the plate storage sections 6 and 7 Preparation To have.

  The printing plate for newspaper printing includes a recording plate (1W2L size, 400 mm × 1100 mm, hereinafter referred to as 1W plate) A having a predetermined width and a double-width recording plate (2W2L size, 800 mm × 1100 mm, hereinafter referred to as 2W plate). C) (refer to FIG. 8) are used, and in the first plate storage 6, the 1W plate recording plate A and the deposit 4 of the interleaf (not shown) are used. A pair of skids 11 on which the is loaded are arranged side by side on the floor. Further, the second plate storage unit 7 stores a cassette 12 in which a 2W-size recording plate C and a deposit 5 of slip sheets (not shown) are stored.

  A pair of suction units 8 are provided side by side horizontally above the skid 11 corresponding to the pair of skids 11 arranged side by side in the first plate storage unit 6, and along the guide posts 13 just above the skid 11. Can be moved up and down.

  The suction unit 8 moves up and down by rotating a screw shaft (not shown) by the servo motor 14, and the height position of the suction unit 8 is determined by counting the number of pulses detected via an encoder (not shown). Thus, the suction unit 8 can be moved and stopped to a required position, and the remaining amount of the recording plate A (C) stored in the plate storage unit 6 (7) can be detected. The pair of servo motors 14 can be switched between synchronous and asynchronous.

  FIG. 4 is a perspective view schematically showing the conveyance state of the recording plate A (C) and the interleaf in the image recording apparatus shown in FIG. Here, a picking step of picking up the top recording plate A (C) one by one from the deposit 4 (5) formed by stacking the recording plates A (C) and transferring them to the plate feeding unit 2, and the plate feeding unit 2 Plate supplying step for supplying the recording plate A (C) to the recording unit 1 and discharging plate for taking the recorded recording plate A (C) recorded by the recording unit 1 into the discharging unit 3 and discharging it outward. If the recording plate A (C) needs to be developed, it is sent to a developing machine.

  When the recording plate A (C) is picked up from the recording plate deposit 4 (5), the recording paper A (C) is picked up at the same time as the recording sheet A (C), and the recording plate A (C) is moved along the way to the plate feeding unit 2. The paper is abandoned, and the interleaf paper is collected by the interleaf paper collecting unit (interleaf paper collecting section) 9, and only the recording plate A (C) is transferred to the plate feeding unit 2. When picking the recording plate A (C), if there is a slip sheet on the top surface of the deposit 4 (5), the picking of the record plate A (C) is stopped and the top slip sheet is removed. After picking up and removing, the recording plate A (C) is picked again.

  As shown in FIG. 2, the plate feeding unit 2 protrudes directly under the suction unit 8 and can receive a plate receiving position where the recording plate A (C) held by the suction unit 8 can be placed on the transport surface, and the suction unit 8. It is supported by the guide rail 19 via the frame 18 so as to be able to advance and retreat between the stand-by position that does not hinder the lifting and lowering.

  The plate discharge unit 3 is also capable of moving back and forth along the guide rail 20 between the plate receiving position and the standby position in preparation for discharging the recording plate A (C) without performing recording.

  The plate supply unit 2 and the plate discharge unit 3 face the recording unit 1 at the standby position, where the recording plate A (C) is supplied to the recording unit 1 and the recording plate A (C) is taken in from the recording unit 1. It is possible.

  The cassette 12 of the second plate storage unit 7 also has a standby position that does not obstruct the picking up of the 1 W plate recording plate A from the first plate storage unit 6, the first plate storage unit 6, and the suction above it. It is possible to move forward and backward between the unit 8 and an operating position that allows the suction unit 8 to pick up the 2 W recording plate C by the suction unit 8.

  The interleaving paper collecting unit 9 is disposed above the plate storage units 6 and 7, and is disposed below the plate feeding unit 2 and the plate discharging unit 3, and protrudes directly below the suction unit 8 to be removed from the suction unit 8. It is possible to advance and retreat between an interleaving paper receiving position capable of accommodating the discarded interleaving paper and a standby position.

  In the recording unit 1, as shown in FIG. 5, the recording plate A is wound around and held by a drum (plate holder) 21, the drum 21 is rotated by a drum rotating motor 22, and the recording head 23 is drummed by a linear motor. The image can be recorded on the recording plate A (C) by traveling in the axial direction of 21.

  The drum 21 is negatively clamped by a clamp 24 that sandwiches the end of the recording plate A (C) and a vacuum pump (negative pressure generating source) 25 in order to tightly fix the recording plate A (C) to the mounting surface on the outer periphery thereof. A negative pressure groove 26 that is held by pressure is provided.

  As shown in the drawing, the negative pressure groove 26 has a pair of plate mounting areas 27 corresponding to the 1 W plate recording plate A so that two 1 W plate recording plates A can be mounted side by side in the width direction (drum axis direction). , 28 are provided. In the plate attachment areas 27 and 28, the negative pressure groove 26 can be operated independently, and the 1 W recording plate A can be attached to only one of the plate attachment areas 27 and 28. On the other hand, in the 2W recording plate C, the recording plate C is attached so as to cover both of the pair of plate attachment regions 27 and 28.

  As shown in FIG. 6, the plate feeding unit 2 includes a transport device 30. As shown in FIG. 7, the transport device 30 includes two transport units 31 and 32 so that two 1-sheet recording plates A can be transported in a direction orthogonal to the plate feeding direction F. ing.

  Each of the conveying units 31 and 32 includes a drive pulley 33, a driven pulley 34, a plate feeding belt 35 hung on the drive pulley 33 and the driven pulley 34, and a drive motor 36 ( 9), the drive pulleys 33 of the conveying units 31 and 32 are connected. A pulley 37 is attached to the rotation shaft 33a of the drive pulley 33, a pulley 38 is attached to the drive shaft 36a of the drive motor 36, and a timing belt 39 is hung between the pulley 37 and the pulley 38. . The conveying units 31 and 32 can be controlled to tilt in the vertical direction as indicated by broken lines in FIG.

  In addition, a press roller (positioning means for positioning the recording plate A placed by the suction unit 8 at positions that align with the plate mounting areas 27 and 28 on the drum 21 of the recording unit 1 is provided in the transport units 31 and 32. A pressing member 41 and a reference pin (reference member) 42, and the pressing roller 41 is disposed on both sides in the width direction orthogonal to the plate feeding direction to the drum 21, and the recording plate A And the reference pin 42 is arranged at the center in the width direction so as to define the position of the recording plate A in the width direction.

  As shown in FIG. 8, the reference pin 42 is provided so as to be movable up and down between an operating position that protrudes above the conveying surface 35 </ b> A of the plate feeding belt 35 and a standby position that immerses below the conveying surface 35 </ b> A. In the case of the 2W recording plate C, the reference pin 42 is in the standby position, and the press roller 41 is in contact with the side line of the recording plate C so as to sandwich the recording plate C from both sides. In the case of the 1W plate recording plate A, the reference pin 42 is in the operating position where it protrudes on the conveying surface 35A, and the presser roller 41 abuts against the outer side line of the recording plate A and pushes the recording plate A inward. Then, the reference pin 42 contacts the inner side line of the recording plate A for positioning.

  Further, as shown in FIG. 9, the plate feeding unit 2 is provided with a front punch device 43 on the carry-in side of the transfer device 30 and a rear punch device 44 on the carry-out side.

  Further, as shown in FIG. 9, an air blowing device 45 that is a pressing unit is disposed in the plate feeding unit 2 so as to be positioned above the conveying device 30. As shown in FIG. 10, the air blowing device 45 includes one and the other compressed air ejection mechanisms 47 </ b> A and 47 </ b> B that are held by a holding member 46 that is continuous with the guide rail 19.

  The one and the other compressed air ejection mechanisms 47A, 47B are provided with compressed air supply heads 48, 49, 50 at the center, one side and the other side in FIG. Is provided with a compressed air introduction port 48a, two connection ports 48b and 48c, and a nozzle mounting port 48d. The compressed air supply head 49 on one side is provided with a compressed air introduction port 49a and a nozzle mounting port. 49 d is provided, and the compressed air supply head 50 on the other side is provided with a compressed air introduction port 50 a and a nozzle mounting port 50 d.

  An injection nozzle 51 is installed in the nozzle mounting port 48d of the central compressed air supply head 48, and one side injection nozzle 52 is installed in the nozzle mounting port 49d of the one side compressed air supply head 49. And the other side injection nozzle 53 is mounted on the nozzle mounting port 50d of the compressed air supply head 50 on the other side.

  The injection nozzle 51 of the central compressed air supply head 48 is vertical so that the injection direction A becomes the vertical direction A. The one side injection nozzle 52 is inclined toward the injection nozzle 51 so that the injection direction B has a predetermined angle with respect to the vertical direction A, and the other side injection nozzle 53 is The injection direction C is inclined toward the angle injection nozzle 51 so that it has a predetermined angle with respect to the vertical direction A.

  One connection port 48b of the central compressed air supply head 48 and the compressed air introduction port 49a of one side of the compressed air supply head 49 are connected by a connecting pipe 54A. The connection port 48c and the compressed air introduction port 50a of the compressed air supply head 50 on the other side are connected by a connection pipe 54B.

  The guide rail 19 is provided with a supply tube 55 connected to a compressed air generating facility (not shown), and a shunt 56 is connected to the end of the supply tube 55. Then, one outlet 56 a of the flow divider 56 is connected to the compressed air inlet 48 a of the compressed air supply head 48 at the center of one compressed air ejection mechanism 47 A via the branch pipe 57. The other outlet 56b is connected to the compressed air inlet 48a of the compressed air supply head 48 at the center of the other compressed air ejection mechanism 47B through a branch pipe 58. In FIG. 10, reference numeral 60 denotes a filter.

  In the state where the air blowing device 45 configured as described above is disposed on the guide rail 19, one compressed air ejection mechanism portion 47A is located immediately above one conveyance portion 31 as shown in FIG. The other compressed air ejection mechanism 47B is located immediately above the other conveyance unit 32, and the central ejection nozzle 51 has its ejection direction a directed perpendicularly to the center on the conveyance surface 35A of the plate feeding belt 35. In addition, the jet nozzle 52 on one side is inclined toward the jet nozzle 51 side so that the jet direction b has a predetermined angle with respect to the conveying surface 35A of the plate feeding belt 35, and the other side The one injection nozzle 53 is inclined toward the angle injection nozzle 51 so that the injection direction C has a predetermined angle with respect to the conveying surface 35 </ b> A of the plate feeding belt 35.

  Further, as shown in FIG. 6, a conveyance roller 59 is disposed in the plate supply path from the plate supply unit 2 to the drum 21 so as to contact the contact surface of the recording plate A (C). The conveying roller 59 is constituted by a rubber roller having a friction coefficient necessary for conveying the recording plate A (C).

  The plate feeding unit 2 is in a state where the drum 21 side is inclined downward when the recording plate A (C) is fed to the drum 21. Further, when the recording plate A (C) is fed by the plate feeding belt 35 of the plate feeding unit 2, the conveying roller 59 is rotationally driven by a motor (not shown) to guide the recording plate A (C) to the drum 21. When the leading end of the recording plate A (C) is fixed to the drum 21 by the clamp 24, the recording plate A (C) rotates around the recording plate A (C) so as not to hinder the drawing operation of the recording plate A (C) by the drum 21.

  Next, the operation of the plate feeding unit 2 and the operation of the air blowing device 45 will be described.

  In the plate feeding unit 2, the recording plate A (C) is aligned using the pressing roller 41 and the reference pin 42, and then the plate feeding unit 2 is returned to the standby position T facing the drum 21. The front punch device 43 and the rear punch device 44 perform punching processing for opening holes for positioning when the recording plate A (C) is wound around and fixed to the drum 21 at both ends.

  That is, by driving the drive motor 36, the drive pulley 33 is rotated through the pulley 37, the timing belt 39, and the pulley 38, and the plate feeding belt 35 is rotated in the forward direction (leftward in FIG. 9) to travel the recording plate. A (C) is moved forward, and one end (front end) of the recording plate A (C) is set in the front punch device 43.

  As described above, the conveyance device 30 includes the two conveyance units 31 and 32 so that two 1-sheet recording plates A can be conveyed in a direction orthogonal to the plate feeding direction F. The drive pulleys 33 of the portions 31 and 32 are rotationally driven by a single drive motor 36. That is, the drive pulley 33 of each of the two transport units 31 and 32 is rotationally driven by a single drive motor 36 so that the plate feeding belt 35 of each of the two transport units 31 and 32 is rotated. When the recording plate A (C) is placed on the two plate feeding belts 35 and conveyed to the front punch device 43, the recording plate A (C) slips with respect to the plate feeding belt 35. Deviation occurs in (C).

  For this reason, when punching is performed by the front punch device 43, it is necessary to fix the recording plate A (C) so that the punch position does not shift.

  The recording plate A (C) is fixed by blowing compressed air onto the upper surface of the recording plate A (C) by the air blowing device 45 configured as described above.

  That is, as shown in FIG. 10, the compressed air is supplied to one and the other compressed air ejection mechanisms 47A and 47B through the supply tube 55, the flow divider 56, and the branch pipes 57 and 58 from the compressed air generation facility. Compressed air is blown onto the recording plate A (C) from above the central injection nozzle 51 and the one side and other side injection nozzles 52, 53 of the air ejection mechanism 47A, and the other compressed air ejection mechanism 47B. The recording plate A (C) is fixed by blowing compressed air from above the central injection nozzle 51 and the one and other side injection nozzles 52 and 53 onto the recording plate A (C).

  As described above, in each of the one and the other compressed air ejection mechanism portions 47A and 47B, the ejection nozzle 52 on one side has a predetermined angle with respect to the conveying surface 35A of the plate feeding belt 35 in the ejection direction b. The injection nozzles 51 are inclined to the injection nozzle 51 side, and the injection nozzles 53 on the other side are angle injection nozzles such that the injection direction C has a predetermined angle with respect to the conveying surface 35A of the plate feeding belt 35. Since it is inclined toward the 51 side, the compressed air injected on the one compressed air ejection mechanism 47A side immediately above the one conveyance unit 31 is not blown to the other conveyance unit 32 side, and the other conveyance Compressed air injected on the other compressed air ejection mechanism 47B side immediately above the section 32 is not blown toward the one conveyance unit 31 side. If the recording plate A (C) does not exist in one conveyance unit, the compressed air is blown onto the plate feeding belt 35, and the surface of the plate feeding belt 35 is cleaned. When dust adheres to the surface of the plate feeding belt 35, the frictional force is reduced to cause a slip or the like, which can be prevented.

  As described above, after punching one end of the recording plate A (C) by the front punch device 43, the drive motor 36 is driven to rotate backward to move the plate feeding belt 35 in the backward direction (rightward in FIG. 9). ), The recording plate A (C) is moved, the other end of the recording plate A (C) is set in the rear punch device 44, and punching is performed. As in the case of punching in the apparatus 43, compressed air is blown onto the upper surface of the recording plate A (C) by the air blowing device 45 to fix the recording plate A (C).

  In addition, when a 2W plate recording plate C is carried on the plate feeding belt 35 of the two conveyance units 31 and 32 and is moved to the front punch device 43 and the rear punch device 44, each of the two conveyance units is conventionally provided. The running speed of the plate feeding belt varies depending on the load of the drive motor, and the recording plate cannot be accurately mounted on the punching device, and the punching process cannot be accurately performed on both ends of the recording plate. By using a single drive motor 36 as the driving source for the conveying units 31 and 32, the recording plate C can be accurately inserted into the front punching device 43 and the rear punching device 44, and precisely at both ends of the recording plate C. Punch processing can be performed.

  Next, the plate feeding unit 2 is tilted to the plate supply position, and the plate feeding belt 35 is rotated by the forward drive of the drive motor 36 to feed the recording plate A (C) to the drum 21. At this time, the recording plate A (C) is reliably guided to the drum 21 side by the conveying roller 59.

  As described above, according to the embodiment of the present invention, during the punching process, compressed air is blown onto the recording plate A (C) by the air blowing device 45 and the recording plate A (C) is pressed against the plate feeding belt 35. The recording plate A (C) can be fixed to eliminate the slip of the recording plate A (C), and the punching process can be accurately performed on both ends of the recording plate A (C).

  In addition, since the compressed air jetted from the jet nozzles 52 and 53 on one side and the other side in one transport unit 31 is blown toward the jet direction of the central spray nozzle 51, the other transport unit 32. Similarly, the compressed air jetted by the jet nozzles 52 and 53 on one side and the other side in the other transport unit 32 is blown toward the jet direction of the jet nozzle 51 at the center. Therefore, the recording plate A (C) transported by one (the other) transport unit 31 (32) is not sprayed to the one transport unit 31 side, and the other (one) transport unit 32 ( The recording plate A (C) can be reliably pressed against the plate feeding belt 35 by blowing compressed air without being affected by the jet flow from the jet nozzles 52 and 53 on the 31) side. For this reason, the recording plate A (C) can be fixed, the slip of the recording plate A (C) can be eliminated, and both ends of the recording plate A (C) can be accurately punched. .

  Further, when the recording plate A (C) is not present in one of the conveying sections, the compressed air is blown onto the plate feeding belt 35, and the surface of the plate feeding belt 35 is cleaned. When dust adheres to the surface of the plate feeding belt 35, the frictional force is reduced to cause a slip or the like, which can be prevented.

  The image recording apparatus according to the present invention fixes the recording plate by pressing the recording plate with the pressing means, that is, with the air spraying apparatus, by pressing the recording plate against the plate feeding belt during the punching process. The recording plate slip can be eliminated, the punching process can be accurately performed on both ends of the recording plate, and it is useful for an image recording apparatus for recording an image on the recording plate.

Front view of an image recording apparatus according to the present invention Side view of the image recording apparatus Plan view of the image recording apparatus The perspective view which shows typically the conveyance state of the recording plate and an interleaf in the image recording device A perspective view of a recording unit in the image recording apparatus Explanatory drawing of a state where the recording plate in the plate supplying unit in the image recording apparatus is supplied to the recording unit Plan view of the plate supply unit in the image recording apparatus Side view of the plate unit Arrangement explanatory drawing of compressed air spraying device Arrow view from the X direction in FIG. Configuration explanatory diagram of compressed air ejection mechanism

Explanation of symbols

1 Recording unit (recording unit)
2 Plate feeding unit (plate feeding section)
3 Discharge unit (Discard part)
4 Deposit 5 Deposit 6 First Plate Storage 7 Second Plate Storage 8 Suction Unit (Plate Transfer Means)
9 Interleaf collection unit (interleaf collection section)
DESCRIPTION OF SYMBOLS 21 Drum 30 Conveyance apparatus 31 One conveyance part 32 The other conveyance part 36 Drive motor 43 Front punch apparatus 44 Rear punch apparatus 45 Air spraying apparatus (pressing means)
46 Holding member 47A One compressed air ejection mechanism part 47B The other compressed air ejection mechanism part 48 Central compressed air supply head 49 One side compressed air supply head 50 Other side compressed air supply head 51, 52, 53 Injection Nozzle A Recording plate C Recording plate

Claims (6)

An image recording apparatus comprising: a recording unit that records an image on a recording plate; and a plate feeding unit that supplies the recording plate to the recording unit,
A conveying unit having a plate feeding belt that conveys the recording plate to the recording unit, and a front punch device that is located on the carry-in side of the conveying unit and that punches one end of the recording plate And a rear punch device that is located on the carry-out side of the transport unit and performs a punching process on the other end of the recording plate,
2. An image recording apparatus according to claim 1, wherein said plate feeding unit is provided with pressing means for pressing said recording plate against said plate feeding belt during said punching process to fix said recording plate. The image recording apparatus according to claim 1, wherein the pressing unit is an air blowing device that performs the fixing by blowing compressed air onto the recording plate. The image recording apparatus according to claim 2, wherein the air blowing apparatus includes an ejection nozzle that blows compressed air onto the recording plate from directly above the transport unit. The plate feeding section has two transport sections so that the recording plate can be transported in a direction orthogonal to the plate feeding direction, and the jet nozzle is provided for each of the two transport sections. The image recording apparatus according to claim 3, wherein the image recording apparatus is arranged immediately above, and the injection directions of the injection nozzles are directed in directions in which the respective injection flows do not interfere with the adjacent transport unit. Three jet nozzles are arranged in each of the two transport sections in a direction orthogonal to the plate feeding direction, and the central spray nozzle has its spray direction on the transport surface of the plate feeding belt. 4. The image according to claim 3, wherein the jet nozzles are oriented vertically, and the jet nozzles on one side and the other side have their jet directions directed toward the jet direction of the central jet nozzle. 5. Recording device. 6. The image recording apparatus according to claim 4, wherein the drive source of the two conveying units is performed by a single drive motor.

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